64seconds
. f3 ^$ c9 P: i. ywww.tvboxnow.com公仔箱論壇) C% F- k! ?3 k
1 to 4 have 3floors = 48 sec
, G; j4 M: v+ k+ S8 q0 X0 ?! ?* rwww.tvboxnow.comavg. 48/3 = 16secwww.tvboxnow.com( U+ ^! [' h1 l- H C
公仔箱論壇5 E# K- W# ~& z: z- E
4 to 8 have 4floors = 16x4www.tvboxnow.com2 ?" o2 |8 R. O: j4 W4 N
= 64secs |